Hand guard



FIG. 1 is a front perspective view of my new and ornamental design for a hand guard;

FIG. 2 is a top view thereof;

FIG. 3 is a top perspective view thereof, fitted on a hand; and,

FIG. 4 is a bottom view thereof, fitted on a hand.

The broken line showing of a human hand is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a hand guard, as shown and described. 